Probe filter retention based low power state
US11940858B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2022 |
| Grant date | Mar 26, 2024 |
| Priority date | — |
| Expiry date | Oct 25, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data fabric routes requests between the plurality of requestors and the plurality of responders. The data fabric includes a crossbar router, a coherent slave controller coupled to the crossbar router, and a probe filter coupled to the coherent slave controller and tracking the state of cached lines of memory. Power state control circuitry operates, responsive to detecting any of a plurality of designated conditions, to cause the probe filter to enter a retention low power state in which a clock signal to the probe filter is gated while power is maintained to the probe filter. Entering the retention low power state is performed when all in-process probe filter lookups are complete.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.